2021/03/05 by Santiago Hernández-Gómez, Nicolas Staudenmaier, Michele Campisi +1 · 31 citations
Materials Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Diamond and Carbon-based Materials Research #Dissipative system #Energy (signal processing) #Mechanical and Optical Resonators #Open quantum system #Quantum #Quantum discord #Quantum fluctuation #Spin (aerodynamics) #Thermal #Work (physics) #cond-mat.mes-hall #cond-mat.stat-mech #physics.atom-ph #quant-ph
paper · pdf · doi:10.1088/1367-2630/abfc6a
published in New Journal of Physics 23(6), 065004 (IOP Publishing) · 6 figures
arxiv created 2021/03/05 · openalex created_date 2021/03/15 · openalex publication_date 2021/04/28 · arxiv updated 2021/06/11 · openalex updated_date 2026/08/05
Abstract The experimental verification of quantum fluctuation relations for driven open quantum system is currently a challenge, due to the conceptual and operative difficulty of distinguishing work and heat. The nitrogen-vacancy (NV) center in diamond has been recently proposed as a controlled test bed to study fluctuation relations in the presence of an engineered dissipative channel, in absence of work (Hernández-Gómez et al 2020 Phys. Rev. Res. 2 023327). Here, we extend those studies to exploring the validity of quantum fluctuation relations in a driven-dissipative scenario, where the spin exchanges energy both with its surroundings because of a thermal gradient, and with an external work source. We experimentally prove the validity of the quantum fluctuation relations in the presence of cyclic driving in two cases, when the spin exchanges energy with an effective infinite-temperature reservoir, and when the total work vanishes at stroboscopic times—although the power delivered to the NV center is non-null. Our results represent the first experimental study of quantum fluctuation relation in driven open quantum systems.